Hi guys,
I have some problems with my itr,
I'm running a drag gen turbo kit with an inline pump and fmu.
The problem is, when the engine change from vacuum to boost at about 5000rpm it has a slight misfire and when i am at wot the car is like going on and off like your pressing the throttle and release it but i'm always kick down.
Could it be a faulty fuel pump or the fmu?

 

ditch the fmu, its part of your problem... are you running colder plugs? any check valves on the MAP?

while i can't stand someone running the afc hack, let alone on a type r of all things, if you want to do it the cheap way... get some 440's, an adjustable FPR, and a v-afc.... search on here under "afc hack" or "vafc hack" to find out details about it........

ideally, i'd get a hondata and a wideband, and have my car tuned

 

I'm running with POWER FC and rc 550cc injectors with an apexi 3 bar map sensor,my plugs are ngk 8

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM97R &raquo;</TD></TR><TR><TD CLASS="quote">I'm running with POWER FC and rc 550cc injectors with an apexi 3 bar map sensor,my plugs are ngk 8</TD></TR></TABLE>

So why in the name of god are you running an FMU?

 

um yeah you don't need the FMU if you have real engine management.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dustin &raquo;</TD></TR><TR><TD CLASS="quote">um yeah you don't need the FMU .</TD></TR></TABLE>

Change this part before you break something.

edit: as in change to a fuel pressure regulator. Then go get retuned.

 

Yes i know about the fmu but i bought the engine managment as a second hand from one on this forum and he used it with the fmu.Yesterday i received the data loggit so i'm gonna remove the fmu soon.

 

Today,i replaced the fmu with a new one and removed the in line pump and put a new walbro 255 in tank.
I checked also fuel press and it showed that from 3000rpm till vtec crossover the press is about 120psi and when vtec kicks in ,it lowers to 70psi.
Do you think there is something wrong with fuel press?
Don't tell me to remove the fmu coz i know it's sh*t but i have to wait till next week to go on the dyno to connect the data loggit and remove the fmu.
Please guys give me some help coz i'm desperate and if this problem remains i'm gonna put the oem n/a engine coz i'm fed up now.
Thanks

 

???...why do you have to wait...just take th **** off...and i would also check tosee if the PFC reflecting the proper injector size. But before you do ANYTHING remove that FMU NOW!!

 

Whats with u and FMU? U married to it or something? Listen to some sound advice on here and get rid of it REAL quick!

 

thats not a cheap engine youre boosting there either...


dont trust the fmu & fuel pump. injectors, pump, and tuning are your only friends in this matter.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by swlabhot &raquo;</TD></TR><TR><TD CLASS="quote">Whats with u and FMU? U married to it or something? Listen to some sound advice on here and get rid of it REAL quick!</TD></TR></TABLE>
ditto

 

Hi guys,
Finally i found the problem,the problem was the oem fuel pump but i did'nt know so i began to change all those stuff i told you before,The last thing was that i removed the inline pump and put a walbro intank but today i realized that the pump they send me was not a high pressure pump so w/o the inline it was coming lean.Now i put again the inline with the walbro intank and came everything to normal.
Thanks for all your help guys.

 

a quick question, maybe dumb, but noone knows everything unless they ask questions. whats big deal with FMU's. are they not reliable, or just a cheap fix...?

 

not reliable, and not a solution for anything.... its a cool little piece of equipment n all, but it SUCKS

 

so you suggest just going for a full hondata upgrade instead of a piggy back FMU?

 

I don't understand why would you risk blowing up an ITR motor by using a AFC, when you can use things similar to hondata like uberdata, and crome.